Programming C# 8.0 by Ian Griffiths

Author:Ian Griffiths [Ian Griffiths]
Language: eng
Format: epub, pdf
Publisher: O'Reilly Media, Inc.
Published: 2019-11-24T16:00:00+00:00

Example 2-20. Errors: some expressions that don’t work as statements

Console.ReadKey().KeyChar + "!"; Math.Sqrt(4) + 1;

Earlier I said that one kind of expression we’re allowed to use as a statement is an assignment. It’s not obvious that assignments should be expressions, but they are, and they do produce a value: the result of an assignment expression is the value being assigned into the variable. This means it’s legal to write code like that in Example 2-21. The second line here uses an assignment expression as an argument for a method invocation, which prints out the value of that expression. The first two WriteLine calls both display 123.

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